Date   

Re: Keypad not beeping

Geoff Smith
 

If I remember correctly it stopped after a battery change and subsequent necessary reload. Maybe I somehow disconnected the audio bit while I was fiddling around inside it.


Re: Rookie Question

ap@CaptivePhotons.com
 

Jeffc wrote:

 

> I would consider getting something like a UPBV2 (or other powered USB hub) and put it on the OTA. 

 

If you swap OTA's frequently, another option is to fasten such a hub to the saddle.  Here is the 16” saddle with a pegasys pocket powerbox advance fastened underneath.  Here only the thru mount cables are attached, and the humidity sensor is taped to the saddle just out of view 9that flat wire).  This stays with the saddle all the time, and then the spiderweb of USB and dew heater and power cables plug in after the OTA is attached.

 

This also keeps the wires (except the dew heater to the front) really short, and they do not need to twist or flex like thru mounts do during slews.

 

There’s room for a LOT of wires thru-mount, but reducing it to just these two makes it more convenient if you want to separate the axes.

 

Linwood

 

 


Re: Rookie Question

Jeffc
 

On Sep 4, 2021, at 10:33 AM, M Hambrick <mhambrick563@gmail.com> wrote:

The three USB ports on the laptop are all being used for the mouse, main imaging camera, and guide camera.
I would consider getting something like a UPBV2 (or other powered USB hub) and put it on the OTA.

Then plug the imaging camera and guide camera into that hub. This will save one port on the laptop.

The focuser could also be plugged into the hub. Save another port there.

Fwiw this is the way I’m setup — there is one USB cable for everything “on the OTA”.
I have 4 ports for the “mount computer”:
- OTA devices: focuser , camera via UPBV2
- AP control box
- Astromi.ch environment / GPS box
- Polemaster camera

The UPBV2 is a bit overkill, but it’s nice for monitoring power, and I now use it for dew control also.

-jeff


Re: Rookie Question

Worsel
 

Two other comments in addition to those who recommend a USB hub to provide more ports. 

Get a powered hub so the length of the cables is less an issue.
Get a hub with more ports that you need...you will likely need them eventually. 

Bryan


Re: Rookie Question

George LaBelle
 

Use a USB hub to expand ports. Suggest a USB 3.0 type even for USB 2.0.

I've used this for years on 2 different setups:  https://www.amazon.com/gp/product/B00MNGIL32/ref=ppx_yo_dt_b_search_asin_title

--
George
Prineville, Oregon


Re: Keypad not beeping

CaptMax
 

My keypad is a very early edition, one of the first couple hundred built. It developed a constant beep awhile back so I decided to send it in for a software update, cleaning, new battery, and hopefully a repair for the constant beep tone it developed. Short of disconnecting the speaker I am left with the noise. Having hearing aids but not always wearing them that constant noise seems to be less annoying. Lol 
I wish I could determine what is causing it regardless. Otherwise it is as good as the day it was built.


Re: Building a custom powerwerx extension cable for CP4 power supply. Question?

Christopher M
 

Whenever I'm going to make a custom DC power cable, I usually use one of the online wire guage calculators.  Enter parameters such as total wire length (there and back), estimated maximum current, that it is DC and not AC, and allowable voltage drop at the usage end.  The calculator then returns a minimum recommended wire gauge to use.  Selecting a heavier gauge wire will reduce your voltage drop at the usage end but at the expense of added weight and $.  Once you know the wire guage then you will know what Powerpole pins to select.
Other things to consider when building a cable are the expected temperature range, permanent or portable installation, and rodent resistance.
If you will be using the cable in temperatures above freezing, then most insulations are likely fine.  If you will use it in the winter well below freezing, then most insulations will NOT be fine, either getting too stiff or possibly cracking when flexed.  For cold weather fexible cable I have been using high conductor count silicone insulated wire found in the hobby industry (HobbyKing, local hobby shop, etc).  Very flexible, but the downside is the silicone insulation is also soft and easily damaged, so I then put the nearly finished cable in braided wire loom (many RV trailer shops, electrical suppliers).  This also helps keep the wires together and from snagging.  Some heat shrink at both ends keeps the braiding from unravelling.
If your target installation is permanent, you can get away with lower conductor count wire (I think standard is 7), but also keep an eye on the insulation as many modern insulations are vegetable based, and RODENTS love to chew on it.  Mmmmm!
-Chris


Re: Keypad not beeping

Jeff B
 

Well, I hate to suggest this but, for me, I can no longer hear the beep due to failing hearing.  I need my hearing aids.

Jeff

On Sun, Sep 5, 2021 at 2:11 AM Geoff Smith <ghsmith45@...> wrote:
I have noticed that when doing a recalibrate the keypad no longer beeps. Is there a beep on/off function somewhere. If so, I haven’t been able to find it.
Geoff


Keypad not beeping

Geoff Smith
 

I have noticed that when doing a recalibrate the keypad no longer beeps. Is there a beep on/off function somewhere. If so, I haven’t been able to find it.
Geoff


Re: Strange numbers in APPM model #APCC #Mach2GTO

Dean Jacobsen
 

On Fri, Sep 3, 2021 at 07:12 AM, David Johnson wrote:
Mount tracked extremely well last night again.  Results here. The mount tracks so well unguided that I think I’ve forgotten how to guide.
Nice shot David. 

I have been doing unguided imaging with the Mach2 for more than a year now and I couldn't be happier with the mount and the software tools.  The guide scope and guide camera have been sitting on the shelf collecting dust.

I also imaged the Sharpless 2-155 area.  My view is a little wider than yours though  --> https://www.astrobin.com/udzsan/E/
 
--
Dean Jacobsen
Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/


Re: hi, may i know how many mach2 could be produced every year? #Mach2GTO

Chris White
 

Since it could be a while before you could purchase a new mach2, you might look for a used mach1 or 900gto.  Both are excellent mounts and will be a huge step up from your cem60.  You might find you don't even need a mach2 after running one of these. 


Re: Strange numbers in APPM model #APCC #Mach2GTO

Chris White
 

 If so, would I have major issues if I tried to do regular tracking correction away from the two arcs? 

I dont think so. I believe that if you move to a location beyond your dec arcs that it reverts to all sky for correction, and I assume that if an all sky model is not present that it would just revert to standard sidereal tracking...


Changing the mount motion rate... #Guiding

robert.saint.jean@...
 

Hi,
I am using a AP 900 GTO mount, CP3 and keypad. The project I am involved in ask that I do a scan of the Sun with a spectrograph at various speed. Using the keypad or the ASCOM interface, I currently scan the Sun at 1X and 12X. Is there a way to get the mount to scan the Sun at 6X or 4X ?

Thanks !

Robert


Re: Strange Artifacts -

Eric Claeys
 

I would bet it’s reflections off some straight surface.  Satellites will usually be much longer.  Meteors tend to be dim on one end and bright on the other, and wider where they are brighter.

It looks like the artifacts on the right are brighter than the ones on the left, as if they are dimmer the farther away from a light source.  If you have a bright light source on the left, are the artifacts on the right dimmer than the ones to the left?

 

Eric


Re: Strange Artifacts -

Wayne Hixson
 

That’s exactly the OAG I have too. 


On Sep 4, 2021, at 12:57 PM, Luca Marinelli <photo@...> wrote:


I had a very similar artifact from the edge of the Optec Sagitta OAG with a FLI ML16200 sensor. Moving the prism up the stalk away from the center of the sensor just a few mm took care of it. 

Luca 

On Sep 4, 2021, at 3:06 PM, Wayne Hixson via groups.io <wayneh9026@...> wrote:

 Thanks Roland - I’ll bet it’s the OAG prism. I’ll take a look. 


On Sep 4, 2021, at 11:48 AM, Roland Christen via groups.io <chris1011@...> wrote:


These kind of reflections always come from some part very close to the focal plane. They cannot originate further up towards the objective lens. Since they are straight lines, they probably originate from some straight part near the chip. I have seen something similar coming from the bottom of an off-axis prism that was refracting (not reflecting) a bright star into the focal plane (similar to diffraction from a Newtonian spider). If not that, then are you using square filters by any chance?

Remove the camera body and look up into the optical train and look down into the camera. Do you see any linear (straight line) obstructions at the edges?

Roland



-----Original Message-----
From: Wayne Hixson via groups.io <wayneh9026@...>
To: main@ap-gto.groups.io
Sent: Sat, Sep 4, 2021 1:06 pm
Subject: Re: [ap-gto] Strange Artifacts -

Hi Robert, I should have mentioned these appear on almost all the subs, so it doesn’t appear to be more random events like meteors. I suspect it’s reflections somewhere. 

--
Roland Christen
Astro-Physics


Re: Strange Artifacts -

Luca Marinelli
 

I had a very similar artifact from the edge of the Optec Sagitta OAG with a FLI ML16200 sensor. Moving the prism up the stalk away from the center of the sensor just a few mm took care of it. 

Luca 

On Sep 4, 2021, at 3:06 PM, Wayne Hixson via groups.io <wayneh9026@...> wrote:

 Thanks Roland - I’ll bet it’s the OAG prism. I’ll take a look. 


On Sep 4, 2021, at 11:48 AM, Roland Christen via groups.io <chris1011@...> wrote:


These kind of reflections always come from some part very close to the focal plane. They cannot originate further up towards the objective lens. Since they are straight lines, they probably originate from some straight part near the chip. I have seen something similar coming from the bottom of an off-axis prism that was refracting (not reflecting) a bright star into the focal plane (similar to diffraction from a Newtonian spider). If not that, then are you using square filters by any chance?

Remove the camera body and look up into the optical train and look down into the camera. Do you see any linear (straight line) obstructions at the edges?

Roland



-----Original Message-----
From: Wayne Hixson via groups.io <wayneh9026@...>
To: main@ap-gto.groups.io
Sent: Sat, Sep 4, 2021 1:06 pm
Subject: Re: [ap-gto] Strange Artifacts -

Hi Robert, I should have mentioned these appear on almost all the subs, so it doesn’t appear to be more random events like meteors. I suspect it’s reflections somewhere. 

--
Roland Christen
Astro-Physics


Re: Strange Artifacts -

Wayne Hixson
 

I think the OAG prism is the problem. The prism is extended quite a way into the optical path. Also, the bottom edge of the prism is not quite parallel to the long edge of the chip. It was rotated 5 degrees or so which would extend the corner of the prism on one side even further into the optical train. I’ve adjusted both and will check it out when I get clear skies again. 

Thanks!

Wayne


On Sep 4, 2021, at 12:06 PM, Wayne Hixson via groups.io <wayneh9026@...> wrote:

Thanks Roland - I’ll bet it’s the OAG prism. I’ll take a look. 


On Sep 4, 2021, at 11:48 AM, Roland Christen via groups.io <chris1011@...> wrote:


These kind of reflections always come from some part very close to the focal plane. They cannot originate further up towards the objective lens. Since they are straight lines, they probably originate from some straight part near the chip. I have seen something similar coming from the bottom of an off-axis prism that was refracting (not reflecting) a bright star into the focal plane (similar to diffraction from a Newtonian spider). If not that, then are you using square filters by any chance?

Remove the camera body and look up into the optical train and look down into the camera. Do you see any linear (straight line) obstructions at the edges?

Roland



-----Original Message-----
From: Wayne Hixson via groups.io <wayneh9026@...>
To: main@ap-gto.groups.io
Sent: Sat, Sep 4, 2021 1:06 pm
Subject: Re: [ap-gto] Strange Artifacts -

Hi Robert, I should have mentioned these appear on almost all the subs, so it doesn’t appear to be more random events like meteors. I suspect it’s reflections somewhere. 

--
Roland Christen
Astro-Physics


Re: Strange Artifacts -

Wayne Hixson
 

Thanks Roland - I’ll bet it’s the OAG prism. I’ll take a look. 


On Sep 4, 2021, at 11:48 AM, Roland Christen via groups.io <chris1011@...> wrote:


These kind of reflections always come from some part very close to the focal plane. They cannot originate further up towards the objective lens. Since they are straight lines, they probably originate from some straight part near the chip. I have seen something similar coming from the bottom of an off-axis prism that was refracting (not reflecting) a bright star into the focal plane (similar to diffraction from a Newtonian spider). If not that, then are you using square filters by any chance?

Remove the camera body and look up into the optical train and look down into the camera. Do you see any linear (straight line) obstructions at the edges?

Roland



-----Original Message-----
From: Wayne Hixson via groups.io <wayneh9026@...>
To: main@ap-gto.groups.io
Sent: Sat, Sep 4, 2021 1:06 pm
Subject: Re: [ap-gto] Strange Artifacts -

Hi Robert, I should have mentioned these appear on almost all the subs, so it doesn’t appear to be more random events like meteors. I suspect it’s reflections somewhere. 

--
Roland Christen
Astro-Physics


Re: Strange Artifacts -

Roland Christen
 

These kind of reflections always come from some part very close to the focal plane. They cannot originate further up towards the objective lens. Since they are straight lines, they probably originate from some straight part near the chip. I have seen something similar coming from the bottom of an off-axis prism that was refracting (not reflecting) a bright star into the focal plane (similar to diffraction from a Newtonian spider). If not that, then are you using square filters by any chance?

Remove the camera body and look up into the optical train and look down into the camera. Do you see any linear (straight line) obstructions at the edges?

Roland



-----Original Message-----
From: Wayne Hixson via groups.io <wayneh9026@...>
To: main@ap-gto.groups.io
Sent: Sat, Sep 4, 2021 1:06 pm
Subject: Re: [ap-gto] Strange Artifacts -

Hi Robert, I should have mentioned these appear on almost all the subs, so it doesn’t appear to be more random events like meteors. I suspect it’s reflections somewhere. 

--
Roland Christen
Astro-Physics


Re: Rookie Question

M Hambrick
 

Thanks Mike

My mistake. I haven't used the Icron in a while and forgot the cabling arrangement. However, when I am using the Icron, the USB cable from the Icron plugs into the USB port on the laptop where I normally plug in my wireless mouse. The mouse then plugs into one of the four ports in the Icron.  If I am using my motorized focuser, the USB cable from the Focuser Boss plugs into one of the other USB ports in the Icron. My cameras are always connected to the other two USB ports on the laptop.

So it sounds like I would have two options for connecting the mount via ethernet cable or one of the USB ports on the Icron.

Mike

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